Title:
セルロースエーテルの製造方法
Document Type and Number:
Japanese Patent JP5377816
Kind Code:
B2
Abstract:
Provided is a method for preparing alkali cellulose having alkali distributed uniformly therein. A uniform alkali distribution in the alkali cellulose makes it possible to prepare cellulose ether which has been substituted uniformly in an etherification reaction step. The resulting cellulose ether does not contain a floating water-insoluble portion which will otherwise appear owing to insufficient substitution. More specifically, provided are a method for preparing alkali cellulose, comprising simultaneously feeding pulp powder and an aqueous alkali solution to a high speed disperser to continuously bring them into contact with each other and a method for preparing cellulose ether, comprising reacting the resulting alkali cellulose with an etherifying agent.
Inventors:
Mitsuo Narita
Atsushi Hatayama
Hiroshi Umezawa
Atsushi Hatayama
Hiroshi Umezawa
Application Number:
JP2005176286A
Publication Date:
December 25, 2013
Filing Date:
June 16, 2005
Export Citation:
Assignee:
Shin-Etsu Chemical Co., Ltd.
International Classes:
C08B1/08; C08B11/02
Domestic Patent References:
| JP3718650B1 | ||||
| JP4933109B1 | ||||
| JP20023501A | ||||
| JP2225501A | ||||
| JP58147401A | ||||
| JP2001302701A | ||||
| JP2002256001A | ||||
| JP9316101A |
Other References:
機械振興,1975年,8(2),p.52-53
色材協会誌,1978年,51(5),p.302-308
SUPERMIXER SMVseries 10B/20Bカタログ,株式会社カワタ,検索日2012年6月21日
SUPERMIXER SMseriesカタログ,株式会社カワタ,検索日2012年6月21日
色材協会誌,1978年,51(5),p.302-308
SUPERMIXER SMVseries 10B/20Bカタログ,株式会社カワタ,検索日2012年6月21日
SUPERMIXER SMseriesカタログ,株式会社カワタ,検索日2012年6月21日
Attorney, Agent or Firm:
Shoichi Okuyama
Arihara Koichi
Matsushima Tetsuo
Hidefumi Kawamura
Arihara Koichi
Matsushima Tetsuo
Hidefumi Kawamura